Merge pull request #26405 from kaingwade:rename_features2d

Rename features2d #26405

This PR renames the module _features2d_ to _features_ as one of the Big OpenCV Cleanup #25007. 
Related PR: opencv/opencv_contrib: [#3820](https://github.com/opencv/opencv_contrib/pull/3820) opencv/ci-gha-workflow: [#192](https://github.com/opencv/ci-gha-workflow/pull/192)

samples/cpp/tutorial_code/calib3d/real_time_pose_estimation/src/Model.h

@@ -10,7 +10,7 @@
 
 #include <iostream>
 #include <opencv2/core/core.hpp>
-#include <opencv2/features2d/features2d.hpp>
+#include <opencv2/features/features.hpp>
 
 class Model
 {

samples/cpp/tutorial_code/calib3d/real_time_pose_estimation/src/RobustMatcher.cpp

@@ -8,7 +8,7 @@
 #include "RobustMatcher.h"
 #include <time.h>
 
-#include <opencv2/features2d/features2d.hpp>
+#include <opencv2/features/features.hpp>
 
 RobustMatcher::~RobustMatcher()
 {

samples/cpp/tutorial_code/calib3d/real_time_pose_estimation/src/RobustMatcher.h

@@ -12,7 +12,7 @@
 
 #include <opencv2/core/core.hpp>
 #include <opencv2/highgui/highgui.hpp>
-#include <opencv2/features2d/features2d.hpp>
+#include <opencv2/features/features.hpp>
 
 class RobustMatcher {
 public:

samples/cpp/tutorial_code/calib3d/real_time_pose_estimation/src/Utils.h

@@ -10,7 +10,7 @@
 
 #include <iostream>
 
-#include <opencv2/features2d.hpp>
+#include <opencv2/features.hpp>
 #include "PnPProblem.h"
 
 // Draw a text with the question point

samples/cpp/tutorial_code/calib3d/real_time_pose_estimation/src/main_registration.cpp

@@ -4,7 +4,7 @@
 #include <opencv2/core.hpp>
 #include <opencv2/imgproc.hpp>
 #include <opencv2/3d.hpp>
-#include <opencv2/features2d.hpp>
+#include <opencv2/features.hpp>
 // PnP Tutorial
 #include "Mesh.h"
 #include "Model.h"